Expanding dispersal studies at hydrothermal vents through species identification of cryptic larval forms

View/ Open
Date
2010-01Author
Adams, Diane K.
Concept link
Mills, Susan W.
Concept link
Shank, Timothy M.
Concept link
Mullineaux, Lauren S.
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/3935As published
https://doi.org/10.1007/s00227-009-1386-8Keyword
Hydrothermal vent; Larvae; Protoconch; Gastropod; Lepetodrilus; Peltospira; RFLP; Barcode; Egg capsulesAbstract
The rapid identification of hydrothermal vent-endemic larvae to the species level is a key
limitation to understanding the dynamic processes that control the abundance and
distribution of fauna in such a patchy and ephemeral environment. Many larval forms
collected near vents, even those in groups such as gastropods that often form a
morphologically distinct larval shell, have not been identified to species. We present a
staged approach that combines morphological and molecular identification to optimize
the capability, efficiency, and economy of identifying vent gastropod larvae from the
northern East Pacific Rise (NEPR). With this approach, 15 new larval forms can be
identified to species. A total of 33 of the 41 gastropod species inhabiting the NEPR, and
26 of the 27 gastropod species known to occur specifically in the 9° 50’ N region, can be
identified to species. Morphological identification efforts are improved by new
protoconch descriptions for Gorgoleptis spiralis, Lepetodrilus pustulosus, Nodopelta
subnoda, and Echinopelta fistulosa. Even with these new morphological descriptions, the
majority of lepetodrilids and peltospirids require molecular identification. Restriction
fragment length polymorphism digests are presented as an economical method for
identification of five species of Lepetodrilus and six species of peltospirids. The
remaining unidentifiable specimens can be assigned to species by comparison to an
expanded database of 18S ribosomal DNA. The broad utility of the staged approach was
exemplified by the revelation of species-level variation in daily planktonic samples and
the identification and characterization of egg capsules belonging to a conid gastropod
Gymnobela sp. A. The improved molecular and morphological capabilities nearly double
the number of species amenable to field studies of dispersal and population connectivity.
Description
Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Marine Biology 157 (2010): 1049-1062, doi:10.1007/s00227-009-1386-8.
Collections
Suggested Citation
Preprint: Adams, Diane K., Mills, Susan W., Shank, Timothy M., Mullineaux, Lauren S., "Expanding dispersal studies at hydrothermal vents through species identification of cryptic larval forms", 2010-01, https://doi.org/10.1007/s00227-009-1386-8, https://hdl.handle.net/1912/3935Related items
Showing items related by title, author, creator and subject.
-
The Trans-Atlantic Geotraverse hydrothermal field : a hydrothermal system on an active detachment fault
Humphris, Susan E.; Tivey, Margaret K.; Tivey, Maurice A. (2015-02)Over the last ten years, geophysical studies have revealed that the Trans-Atlantic Geotraverse (TAG) hydrothermal field (26°08’N on the Mid-Atlantic Ridge) is located on the hanging wall of an active detachment fault. ... -
Cemented mounds and hydrothermal sediments on the detachment surface at Kane Megamullion : a new manifestation of hydrothermal venting
Tucholke, Brian E.; Humphris, Susan E.; Dick, Henry J. B. (John Wiley & Sons, 2013-09-03)Long-lived detachment faults are now known to be important in tectonic evolution of slow-spreading mid-ocean ridges, and there is increasing evidence that fluid flow plays a critical role in development of detachment ... -
Variable morphologic expression of volcanic, tectonic, and hydrothermal processes at six hydrothermal vent fields in the Lau back-arc basin
Ferrini, Vicki L.; Tivey, Margaret K.; Carbotte, Suzanne M.; Martinez, Fernando; Roman, Christopher N. (American Geophysical Union, 2008-07-26)Ultrahigh-resolution bathymetric maps (25 cm grid) are used to quantify the physical dimensions of and spatial relationships between tectonic, volcanic, and hydrothermal features at six hydrothermal vent fields in the Lau ...